In December 2015, a first-of-its-kind cyber attack cut the lights to 225,000 people in western Ukraine, with hackers also sabotaging power distribution equipment, complicating attempts to restore power.

A year later, a cyber attack caused a power blackout in Ukraine's capital Kyiv. In June 2017 Ukrenergo appeared to be an early victim of a cyber attack that began in Ukraine and spread around the world, knocking out thousands of machines, shutting down ports, factories and offices in around 60 countries.

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